Label "Understand as a mistake" response with a letter

[bg]

Is there a way to make “Understand as a mistake” comply with the rule that extensions must have lettered responses in named rules?

I’ve tried something like this

Understand "asdf" as a mistake ("Response goes here" (A)) (this is the whatever rule).

which results in this compiler error:

You wrote ‘Understand “asdf” as a mistake (“Response goes here” (A)) (this is the whatever rule)’ : but when ‘understand’ results in a mistake it can only be followed by a textual message in brackets, so for instance ‘understand “take” as a mistake (“In this sort of game, a noun is required there.”).’

If it’s not possible, should it be, and where does one make this sort of feature request?

[zarf (Andrew Plotkin)]

No, an understand line is not a rule. Only rules can contain marked responses.

You could write

Understand “asdf” as a mistake ("[asdf-response]").
To say asdf-response: follow the asdf-response-rule.

This is obviously awkward and awful, so it’s worth a feature request (if there isn’t already one).

[bg]

Thanks. I’ve put a request on uservoice.